It had smaller population around 2 million 
        
             
        
        
        
Clot
clots
land
lands
lots
slot
loan
loans
slant
sand
coal
coals
        
             
        
        
        
Answer: convergent plate boundries 
Explanation:
At convergent plate boundaries, where two continental plates collide earthquakes are deep and also very powerful. In general, the deepest and the most powerful earthquakes occur at plate collision (or subduction) zones at convergent plate boundaries.
 
        
             
        
        
        
The difference between the two mentioned magnitudes is 4.
A magnitude 1 earth-quack is 10000 times bigger than a magnitude -3 earth-quack. On the other hand, it is 1000000 times stronger in terms of energy release.
Note: To calculate the difference in energy between two earth-quacks, first you calculate the difference between their magnitudes and then you raise 10 to the output you obtain.